Practical Guide to MFPP Material Identification
author: Iris
2025-11-17
I. Basic Knowledge and Market Background of MFPP Material
In modern life, disposable lunch boxes have become essential for takeout delivery and fast food consumption. With increasing consumer health awareness and the advancement of environmental policies, the choice of lunch box material has become increasingly important. MFPP (Mineral Filled Polypropylene), as a new modified material, is gradually entering the market. It is a composite material made by adding mineral fillers such as calcium carbonate, talc, and barium sulfate to traditional PP (polypropylene) material.
The core advantage of MFPP material lies in its unique formulation design. Commonly available MFPP lunch boxes typically use a ratio of 60% PP and 40% natural mineral materials. This design not only reduces the amount of plastic used by about 50% but also significantly improves the material's heat resistance, rigidity, and dimensional stability. Depending on the type of filler, MFPP exhibits different properties: talc-filled MFPP features high rigidity and low shrinkage; barium sulfate-filled MFPP achieves a balance between rigidity and toughness, and high gloss; calcium carbonate-filled MFPP boasts high toughness, odorless properties, and high cost-effectiveness.
The core advantage of MFPP material lies in its unique formulation design. Commonly available MFPP lunch boxes typically use a ratio of 60% PP and 40% natural mineral materials. This design not only reduces the amount of plastic used by about 50% but also significantly improves the material's heat resistance, rigidity, and dimensional stability. Depending on the type of filler, MFPP exhibits different properties: talc-filled MFPP features high rigidity and low shrinkage; barium sulfate-filled MFPP achieves a balance between rigidity and toughness, and high gloss; calcium carbonate-filled MFPP boasts high toughness, odorless properties, and high cost-effectiveness.
II. MFPP Identification Methods in Everyday Life Scenarios
2.1 Visual Identification Method: Appearance Feature Recognition
Visual identification is the most intuitive and simplest method. By observing the appearance of the lunchbox, its material type can be preliminarily determined.
Transparency is a crucial indicator for distinguishing MFPP from other materials. Pure PP material is typically milky white and semi-transparent, while MFPP, due to the addition of mineral fillers, has significantly reduced transparency, exhibiting a semi-transparent to opaque characteristic. Common colors for MFPP lunchboxes on the market include black, white, and transparent, but even the transparent versions are not as transparent as pure PP. In contrast, PS material is usually transparent or semi-transparent with high transparency; PET material has extremely high transparency, approaching a glass-like texture.
Surface texture is another important characteristic of MFPP. MFPP (Metallic Fluorescent Polypropylene) lunchboxes have a texture closer to matte and frosted finishes, giving them a more upscale appearance. Visually, MFPP lacks the strong plastic feel of pure PP, instead exhibiting a ceramic or frosted glass-like texture. This texture is particularly noticeable under light; MFPP reflects light softly without strong glare.
Regarding color, it's important to distinguish between different types of lunchboxes. New PP has a textured feel, tensile strength, and elasticity, and is transparent and odorless; while lunchboxes with added fillers have a papery feel, are soft and uneven in thickness, and exhibit significant color variations. Because MFPP lunchboxes contain mineral fillers, their color is usually darker than pure PP; white versions may appear off-white or milky white, rather than the clear white of pure PP.
When observing the appearance, pay attention to the following details: Surface smoothness: A qualified lunchbox should have a smooth, even surface and uniform color; Complete labeling: Legitimate products should have the material name (e.g., PP, PS, PLA), heat resistance range, and manufacturer information clearly marked on the bottom or side; Color uniformity: If there are obvious black spots or impurities on the surface of the lunchbox, it may indicate the use of recycled materials.
Transparency is a crucial indicator for distinguishing MFPP from other materials. Pure PP material is typically milky white and semi-transparent, while MFPP, due to the addition of mineral fillers, has significantly reduced transparency, exhibiting a semi-transparent to opaque characteristic. Common colors for MFPP lunchboxes on the market include black, white, and transparent, but even the transparent versions are not as transparent as pure PP. In contrast, PS material is usually transparent or semi-transparent with high transparency; PET material has extremely high transparency, approaching a glass-like texture.
Surface texture is another important characteristic of MFPP. MFPP (Metallic Fluorescent Polypropylene) lunchboxes have a texture closer to matte and frosted finishes, giving them a more upscale appearance. Visually, MFPP lacks the strong plastic feel of pure PP, instead exhibiting a ceramic or frosted glass-like texture. This texture is particularly noticeable under light; MFPP reflects light softly without strong glare.
Regarding color, it's important to distinguish between different types of lunchboxes. New PP has a textured feel, tensile strength, and elasticity, and is transparent and odorless; while lunchboxes with added fillers have a papery feel, are soft and uneven in thickness, and exhibit significant color variations. Because MFPP lunchboxes contain mineral fillers, their color is usually darker than pure PP; white versions may appear off-white or milky white, rather than the clear white of pure PP.
When observing the appearance, pay attention to the following details: Surface smoothness: A qualified lunchbox should have a smooth, even surface and uniform color; Complete labeling: Legitimate products should have the material name (e.g., PP, PS, PLA), heat resistance range, and manufacturer information clearly marked on the bottom or side; Color uniformity: If there are obvious black spots or impurities on the surface of the lunchbox, it may indicate the use of recycled materials.
2.2 Tactile Identification Method: Judging by Feel and Texture
Tactile identification involves touching and feeling the texture of the lunchbox to determine the material type. This method is simple and easy to use, especially suitable for use on the spot.
Tactile characteristics are key to distinguishing MFPP from other materials. MFPP lunchboxes feel smooth, have a sturdy body, and have no odor. When touched, the surface of MFPP is smooth but does not have the oily feel of pure PP; it has a sturdy and resilient texture and makes a crisp sound when shaken. In comparison, pure PP material feels smooth to the touch but not slippery; PE material feels waxy and slippery, and is soft and flexible; PS material feels harder but is brittle, easily scratched, and prone to stress cracking.
Weight is another important distinguishing feature. MFPP food containers for take-out, containing 40% mineral filler, are significantly heavier than pure PP lunch boxes. Data shows that pure PP has a density of 0.9-0.91 g/cm³, while MFPP with added mineral filler has a density of 1.08-1.15 g/cm³. Therefore, for the same volume, MFPP lunch boxes feel noticeably heavier, while pure PP lunch boxes are relatively lighter.
Temperature conductivity can also be used as a supplementary criterion. Holding the lunch box for a few seconds, MFPP, due to its mineral filler content, has better thermal conductivity than pure PP, and therefore feels cooler. This difference is particularly noticeable at lower ambient temperatures. When conducting tactile identification, the following points should be noted: Uniformity of texture: Squeeze the lunchbox and observe whether it deforms easily. MFPP lunchboxes should have good rigidity and be resistant to deformation. Edge treatment: Touch the edges of the lunchbox; high-quality MFPP lunchboxes should have smooth, rounded edges without burrs. Odor test: Smell the lunchbox to see if it has a pungent plastic smell. If there is a noticeable odor, even if it looks similar to MFPP, it should be used with caution.
Tactile characteristics are key to distinguishing MFPP from other materials. MFPP lunchboxes feel smooth, have a sturdy body, and have no odor. When touched, the surface of MFPP is smooth but does not have the oily feel of pure PP; it has a sturdy and resilient texture and makes a crisp sound when shaken. In comparison, pure PP material feels smooth to the touch but not slippery; PE material feels waxy and slippery, and is soft and flexible; PS material feels harder but is brittle, easily scratched, and prone to stress cracking.
Weight is another important distinguishing feature. MFPP food containers for take-out, containing 40% mineral filler, are significantly heavier than pure PP lunch boxes. Data shows that pure PP has a density of 0.9-0.91 g/cm³, while MFPP with added mineral filler has a density of 1.08-1.15 g/cm³. Therefore, for the same volume, MFPP lunch boxes feel noticeably heavier, while pure PP lunch boxes are relatively lighter.
Temperature conductivity can also be used as a supplementary criterion. Holding the lunch box for a few seconds, MFPP, due to its mineral filler content, has better thermal conductivity than pure PP, and therefore feels cooler. This difference is particularly noticeable at lower ambient temperatures. When conducting tactile identification, the following points should be noted: Uniformity of texture: Squeeze the lunchbox and observe whether it deforms easily. MFPP lunchboxes should have good rigidity and be resistant to deformation. Edge treatment: Touch the edges of the lunchbox; high-quality MFPP lunchboxes should have smooth, rounded edges without burrs. Odor test: Smell the lunchbox to see if it has a pungent plastic smell. If there is a noticeable odor, even if it looks similar to MFPP, it should be used with caution.
2.3 Simple Physical Testing Method: Performance Verification
Some simple physical tests can further verify the material properties of the lunchbox.
- The bending test is the most commonly used physical testing method. PP material lunchboxes have good toughness and can withstand tens of thousands of bending and folding cycles. Although the toughness of MFPP is slightly reduced due to the addition of mineral fillers, it still maintains good bending performance. During testing, gently bend the edge or lid of the lunchbox and observe its reaction: MFPP lunchboxes should be able to bend at a certain angle without breaking and should basically return to their original shape after being released; if they break easily, they are likely made of PS material; if they are difficult to return to their original shape after bending, they are likely made of PE material.
- The compression test can verify the structural strength of the lunchbox. MFPP lunchboxes have 20-30% higher compression resistance than PP materials, therefore performing better in the compression test. Test method: Place the lunchbox on a flat table and apply pressure evenly with your palm, observing the degree of deformation. MFPP lunchboxes should be able to withstand greater pressure without deforming or breaking; if significant deformation occurs with less pressure, it is likely not made of MFPP material.
The density test is a relatively accurate identification method. Pure PP has a density less than 1 and will float on water; while MFPP, due to the addition of mineral fillers, has a density greater than 1 and will sink or float. Specific operating methods: Prepare a basin of clean water, cut the lunchbox into small pieces (be careful to avoid scratches), and place them in the water to observe: If the lunchbox pieces float completely, they are likely pure PP; if they sink or float, they are likely MFPP or other materials. However, it should be noted that this method is only a preliminary judgment, as some recycled plastics or other materials may also exhibit similar behavior.
Heat resistance testing requires careful operation but can effectively verify material properties. MFPP food containers for take-out can withstand a maximum operating temperature of 135℃, which is 25℃ higher than the 110℃ of ordinary PP lunchboxes. Under safe conditions, a simple heat resistance test can be performed: pour a small amount of hot water (approximately 80-90℃) into the lunchbox and observe for a few minutes. MFPP lunchboxes should be able to withstand this temperature without deformation or emitting an odor; if the lunchbox deforms quickly or emits a pungent odor, it is likely not made of MFPP material. However, special caution is required: this test carries a risk of burns; handle with care, and it is recommended to use gloves or other protective equipment.
Heat resistance testing requires careful operation but can effectively verify material properties. MFPP food containers for take-out can withstand a maximum operating temperature of 135℃, which is 25℃ higher than the 110℃ of ordinary PP lunchboxes. Under safe conditions, a simple heat resistance test can be performed: pour a small amount of hot water (approximately 80-90℃) into the lunchbox and observe for a few minutes. MFPP lunchboxes should be able to withstand this temperature without deformation or emitting an odor; if the lunchbox deforms quickly or emits a pungent odor, it is likely not made of MFPP material. However, special caution is required: this test carries a risk of burns; handle with care, and it is recommended to use gloves or other protective equipment.
2.4 Combustion Identification Method: Chemical Characteristic Analysis
The combustion identification method is a relatively accurate method, but it needs to be performed in a safe environment. It is recommended to operate in a well-ventilated outdoor location.
Combustion characteristics are an important basis for distinguishing different plastic materials. PP material is easily combustible, burns slowly, with a yellow upper flame and a blue center, exhibiting molten dripping, and leaving a paraffin-like odor after the flame is extinguished. MFPP, due to the presence of mineral fillers, has different combustion characteristics: a relatively slower burning speed, a potentially yellowish flame, and the production of more solid residue (mineral fillers) during combustion. The odor after combustion may have a slight mineral smell.
Combustion characteristics are an important basis for distinguishing different plastic materials. PP material is easily combustible, burns slowly, with a yellow upper flame and a blue center, exhibiting molten dripping, and leaving a paraffin-like odor after the flame is extinguished. MFPP, due to the presence of mineral fillers, has different combustion characteristics: a relatively slower burning speed, a potentially yellowish flame, and the production of more solid residue (mineral fillers) during combustion. The odor after combustion may have a slight mineral smell.
The specific operating steps are as follows (please pay attention to safety):
- Prepare a metal container or fireproof surface to collect the burning residue.
- Cut a small piece of the food containers for take-out material (about 1cm²) with scissors, being careful to avoid burns.
- Ignite the material with a lighter or matches and observe the burning process.
- Record the burning characteristics: ease of burning, flame color, presence of black smoke, presence of molten drips, and the smell after burning.
Comparison of burning characteristics of different materials:
- PP material: easily combustible, flame is yellow at the top and blue at the bottom, molten drips occur, and there is a paraffin smell after burning.
- PS material: easily combustible, flame is orange-yellow, thick black smoke, and a distinctive ethylene smell.
- PET material: easily combustible, flame is yellow, with a small amount of black smoke and a sour smell.
- MFPP material: burns slowly, flame color is yellowish, there is more solid residue, and a distinctive odor.
It is particularly important to emphasize that the combustion identification method carries certain safety risks. When operating, please pay attention to the following: choose a well-ventilated environment, away from flammable materials; have fire extinguishers readily available; extinguish the fire promptly and dispose of the residue properly; avoid inhaling the smoke produced by the fire; do not perform this procedure indoors or in enclosed spaces; wash hands promptly after the procedure.
III. Comparative Analysis of MFPP and Common Similar Materials
3.1 Comparison of MFPP and PP Materials
MFPP and PP (polypropylene) are two materials that are most easily confused because they share the same basic components, but their performance characteristics differ significantly.
The difference in composition is the most fundamental distinction between the two. Pure PP lunch boxes are made of 100% polypropylene, while MFPP lunch boxes are composed of 60% PP and 40% natural mineral materials (such as talc, calcium carbonate, etc.). This difference in composition directly leads to a significant change in performance.
A comparison of physical properties shows the advantages of MFPP. In terms of heat resistance, the maximum operating temperature of pure PP lunch boxes is 110℃, while that of MFPP lunch boxes can reach 135℃, an increase of 25℃. This improved heat resistance allows MFPP lunch boxes to be used for extended periods in an environment of 200°F (approximately 93℃) under a heat lamp, and they can withstand repeated microwave heating without easily deforming or developing odors. In terms of compressive strength, MFPP is 20-30% better than PP, making it more suitable for bulk delivery, stacking transportation, and heavy-duty scenarios.
The difference in appearance and texture is the most easily observed distinction for consumers. Pure PP material is typically milky white and semi-transparent with a smooth surface, and some models have a strong plastic feel. MFPP, due to the addition of mineral fillers, is semi-transparent to opaque, with a surface texture closer to matte and frosted, giving it a more premium appearance.
In terms of environmental performance, MFPP has a significant advantage. MFPP reduces plastic usage by 50%, and its carbon footprint is 52% lower than that of petroleum-based PP. Furthermore, MFPP has a certain degree of biodegradability, converting into organic fertilizer in soil within 3-6 months, while pure PP material is extremely difficult to biodegrade and may take over 200 years to decompose in the natural environment.
Cost-benefit analysis shows that although the unit cost of MFPP is slightly higher than that of PP, considering both usage efficiency and environmental factors, the total life-cycle cost of MFPP is lower. MFPP lunch boxes have a 30-40% lower breakage rate than PP, a longer lifespan, and reduce replacement frequency and waste generation.
The difference in composition is the most fundamental distinction between the two. Pure PP lunch boxes are made of 100% polypropylene, while MFPP lunch boxes are composed of 60% PP and 40% natural mineral materials (such as talc, calcium carbonate, etc.). This difference in composition directly leads to a significant change in performance.
A comparison of physical properties shows the advantages of MFPP. In terms of heat resistance, the maximum operating temperature of pure PP lunch boxes is 110℃, while that of MFPP lunch boxes can reach 135℃, an increase of 25℃. This improved heat resistance allows MFPP lunch boxes to be used for extended periods in an environment of 200°F (approximately 93℃) under a heat lamp, and they can withstand repeated microwave heating without easily deforming or developing odors. In terms of compressive strength, MFPP is 20-30% better than PP, making it more suitable for bulk delivery, stacking transportation, and heavy-duty scenarios.
The difference in appearance and texture is the most easily observed distinction for consumers. Pure PP material is typically milky white and semi-transparent with a smooth surface, and some models have a strong plastic feel. MFPP, due to the addition of mineral fillers, is semi-transparent to opaque, with a surface texture closer to matte and frosted, giving it a more premium appearance.
In terms of environmental performance, MFPP has a significant advantage. MFPP reduces plastic usage by 50%, and its carbon footprint is 52% lower than that of petroleum-based PP. Furthermore, MFPP has a certain degree of biodegradability, converting into organic fertilizer in soil within 3-6 months, while pure PP material is extremely difficult to biodegrade and may take over 200 years to decompose in the natural environment.
Cost-benefit analysis shows that although the unit cost of MFPP is slightly higher than that of PP, considering both usage efficiency and environmental factors, the total life-cycle cost of MFPP is lower. MFPP lunch boxes have a 30-40% lower breakage rate than PP, a longer lifespan, and reduce replacement frequency and waste generation.
3.2 Comparison of MFPP and PS Materials
PS (polystyrene) is another common lunch box material, and it differs significantly from MFPP in several aspects.
The most crucial difference lies in safety. The biggest problem with PS material is its poor heat resistance, only able to withstand 70-90℃. Above this temperature, it softens, deforms, and releases harmful substances. Especially when containing food or oil above 70℃, PS releases styrene monomers, a potential carcinogen. In contrast, MFPP has a heat resistance of up to 135℃, good chemical stability, and does not release harmful substances at normal usage temperatures.
The physical properties also present a stark contrast. PS material is usually transparent or translucent, hard and brittle, and easily broken. A PS lunch box is easily broken by hand, and its surface is prone to scratches. MFPP, on the other hand, is translucent to opaque, with a stiff yet resilient texture, making it less prone to deformation and breakage.
The differences in appearance and feel are also significant. PS lunch boxes are highly transparent, allowing a clear view of the food inside, but they feel stiff and lack a premium feel. MFPP lunch boxes have lower transparency, but a frosted surface, a comfortable feel, and a more upscale appearance.
Differences in application scenarios determine their market positioning. PS lunch boxes are mainly used for holding cold foods (such as salads, fruits, and cold dishes) and room-temperature foods (such as sushi and rice balls), and are not suitable for holding hot soups, hot dishes, or microwave heating. MFPP lunch boxes are widely used in high-temperature hot meals (such as hot pot and self-heating rice), airline/railway catering, chain brands, and other scenarios where high quality is required.
In terms of environmental friendliness, PS material is difficult to degrade and produces toxic gases when burned, posing a significant threat to the environment. Although MFPP is also a plastic material, due to the addition of mineral fillers, it has a certain degree of biodegradability and better environmental performance.
The most crucial difference lies in safety. The biggest problem with PS material is its poor heat resistance, only able to withstand 70-90℃. Above this temperature, it softens, deforms, and releases harmful substances. Especially when containing food or oil above 70℃, PS releases styrene monomers, a potential carcinogen. In contrast, MFPP has a heat resistance of up to 135℃, good chemical stability, and does not release harmful substances at normal usage temperatures.
The physical properties also present a stark contrast. PS material is usually transparent or translucent, hard and brittle, and easily broken. A PS lunch box is easily broken by hand, and its surface is prone to scratches. MFPP, on the other hand, is translucent to opaque, with a stiff yet resilient texture, making it less prone to deformation and breakage.
The differences in appearance and feel are also significant. PS lunch boxes are highly transparent, allowing a clear view of the food inside, but they feel stiff and lack a premium feel. MFPP lunch boxes have lower transparency, but a frosted surface, a comfortable feel, and a more upscale appearance.
Differences in application scenarios determine their market positioning. PS lunch boxes are mainly used for holding cold foods (such as salads, fruits, and cold dishes) and room-temperature foods (such as sushi and rice balls), and are not suitable for holding hot soups, hot dishes, or microwave heating. MFPP lunch boxes are widely used in high-temperature hot meals (such as hot pot and self-heating rice), airline/railway catering, chain brands, and other scenarios where high quality is required.
In terms of environmental friendliness, PS material is difficult to degrade and produces toxic gases when burned, posing a significant threat to the environment. Although MFPP is also a plastic material, due to the addition of mineral fillers, it has a certain degree of biodegradability and better environmental performance.
3.3 Comparison of MFPP and PET Materials
PET (polyethylene terephthalate) is a material widely used in beverage bottles and some food containers, and it differs from MFPP in several aspects.
The difference in heat resistance is a significant distinction. PET has poor heat resistance, only able to withstand temperatures below 60℃. It is easily deformed at high temperatures and cannot be microwaved. This limits PET food containers to holding cold drinks or room-temperature food, making them unsuitable for hot food packaging. MFPP food containers for take-out, on the other hand, have a heat resistance of up to 135℃, allowing them to safely hold hot food and be microwaved.
The differences in transparency and appearance are also very noticeable. PET has extremely high transparency, approaching a glass-like quality, with a smooth and glossy surface. This high transparency makes it particularly suitable for displaying food contents, such as fruit boxes and salad boxes. MFPP, however, is translucent to opaque, with a frosted surface and a more understated appearance.
A comparison of physical properties reveals their respective characteristics. PET has superior strength and toughness compared to PS and PVC, is less prone to breakage, and has higher hardness. However, PET is less rigid than MFPP and is prone to deformation under heavy pressure. MFPP, on the other hand, has better rigidity and dimensional stability, making it suitable for applications requiring stacking and transportation.
Differences in chemical stability affect safety. PET is prone to deformation at high temperatures and may release plasticizers and heavy metals, making it non-reusable. MFPP has better chemical stability and does not release harmful substances under normal use conditions, allowing for multiple reuses.
Differences in application scenarios reflect their market positioning. PET food containers are mainly used for disposable fruit boxes, snack packaging, and cold drink cups—applications requiring high transparency. MFPP food containers for take-out are primarily used for applications requiring higher quality, heat resistance, and environmental friendliness.
The difference in heat resistance is a significant distinction. PET has poor heat resistance, only able to withstand temperatures below 60℃. It is easily deformed at high temperatures and cannot be microwaved. This limits PET food containers to holding cold drinks or room-temperature food, making them unsuitable for hot food packaging. MFPP food containers for take-out, on the other hand, have a heat resistance of up to 135℃, allowing them to safely hold hot food and be microwaved.
The differences in transparency and appearance are also very noticeable. PET has extremely high transparency, approaching a glass-like quality, with a smooth and glossy surface. This high transparency makes it particularly suitable for displaying food contents, such as fruit boxes and salad boxes. MFPP, however, is translucent to opaque, with a frosted surface and a more understated appearance.
A comparison of physical properties reveals their respective characteristics. PET has superior strength and toughness compared to PS and PVC, is less prone to breakage, and has higher hardness. However, PET is less rigid than MFPP and is prone to deformation under heavy pressure. MFPP, on the other hand, has better rigidity and dimensional stability, making it suitable for applications requiring stacking and transportation.
Differences in chemical stability affect safety. PET is prone to deformation at high temperatures and may release plasticizers and heavy metals, making it non-reusable. MFPP has better chemical stability and does not release harmful substances under normal use conditions, allowing for multiple reuses.
Differences in application scenarios reflect their market positioning. PET food containers are mainly used for disposable fruit boxes, snack packaging, and cold drink cups—applications requiring high transparency. MFPP food containers for take-out are primarily used for applications requiring higher quality, heat resistance, and environmental friendliness.
3.4 Material Comparison Summary Table
To help consumers better distinguish between different materials, we have created the following comparison table:
| Material Type | Transparency | Heat Resistance Temperature |
Safety | Environmental Protection | Main Features | Suitable Scenarios |
| MFPP | Semi-transparent to Opaque | 135℃ | High | Medium (50% Plastic Reduction) | Frosty Texture, Good Rigidity | High-end Catering, Hot Food |
| PP | Semi-transparent | 110℃ | High | Low | Transparent, Lightweight | Daily Takeout, Microwave Heating |
| PS | Transparent | 70-90℃ | Low (High Temperature Styrene Release) | Low | Transparent and Brittle | Cold Food, Room Temperature Food |
| PET | High Transparency | Below 60℃ | Medium (High Temperature Plasticizer Release) | Low | Extremely High Transparency | Fruit Boxes, Cold Drinks |
| Pulp | Opaque | 60-80℃ | High | Extremely High (Completely Degradable) | Natural Fiber Texture | Environmental Needs Scenarios |
| Degradable (PLA) | Semi-transparent | 60-90℃ | High | Extremely High (Decomposes in 3-6 Months) | Soft to the touch | Environmentally friendly, high-end market |
This comparison table allows consumers to quickly choose the right lunchbox material based on their needs. If quality and heat resistance are prioritized, MFPP is the ideal choice; if cost-effectiveness is the primary consideration, PP material is more suitable; if environmental protection is a major concern, pulp or biodegradable lunchboxes are preferable.
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