Five films, five different jobs. Pick by crop, channel and budget — not by habit.五种膜材各有分工，按品类、渠道与预算选，而不是凭习惯。
Every week we quote produce bags for growers and importers who ask for "PE bags" out of habit — when a different film would sell more fruit or cost less. Here is the comparison table our sales engineers actually use.
| Film | Clarity | Feel & strength | Typical use | Relative cost |
|---|---|---|---|---|
| PE (polyethylene) | Good, slightly hazy | Soft, stretchy, tough | Everyday vegetable bags, banana cluster bags, liner bags | $ |
| PO (polyolefin blend) | Very good | Crisp yet tear-resistant | Supermarket fruit bags, wicketed bags for packhouse lines | $$ |
| CPE (cast PE) | Matte, frosted look | Soft, premium hand-feel | Premium fruit gift bags, frosted zipper bags | $$ |
| OPP (oriented PP) | Glass-clear | Stiff, crinkly, lower tear resistance | Retail display bags, stand-up pouches with print | $$ |
| POF (polyolefin shrink) | Excellent after shrink | Thin, strong shrink film | Tray overwrap, multipack shrink bundles | $$ |
Leafy greens and high-respiration vegetables (lettuce, baby cabbage, broccoli) need breathability first: micro-perforated PE or PO with anti-fog treatment keeps leaves crisp without condensation clouding the pack. Citrus and pome fruit (mandarins, oranges, pears, apples) sell on shelf appeal, so glass-clear OPP stand-up pouches or PO zipper bags with 8-color gravure printing win the retail shelf. Bananas use PE cluster bags and banavac-style liners that control humidity in the carton. Root vegetables (potatoes, onions, sweet potatoes) are heavier — thicker PE or woven-look laminates with strong bottom seals, or mesh-combination bags for airflow.
Hole size and count set the oxygen exchange rate. Too few holes and the pack fogs and rots; too many and produce dehydrates. We match the perforation pattern to the crop's respiration rate — tell us the crop and shelf-life target and we calculate it.
A retail pack that fogs in the chiller looks spoiled even when the fruit is perfect. Anti-fog additive or coating keeps the film transparent through temperature swings — essential for any refrigerated retail program.
All our produce bags are made from food-grade virgin resin with FDA / EU 10-2011 compliant materials, printed with food-safe inks. Ask for the compliance declaration with every order — our certifications cover the production system behind it.
Browse the full range with photos on our produce packaging bags page, including zipper bags, stand-up pouches, wicketed bags and vented fresh bags.
每周都有客户按习惯来问"PE袋"报价——但很多时候换一种膜材，水果卖得更好或成本更低。下面这张表就是我们销售工程师实际在用的对比。
| 膜材 | 透明度 | 手感与强度 | 典型用途 | 相对成本 |
|---|---|---|---|---|
| PE（聚乙烯） | 良好，略雾 | 柔软有弹性，抗撕裂 | 日常蔬菜袋、香蕉串袋、内衬袋 | $ |
| PO（聚烯烃共混） | 很好 | 挺括又耐撕 | 商超水果袋、包装线用钉排袋 | $$ |
| CPE（流延PE） | 磨砂质感 | 柔软高级手感 | 高端水果礼品袋、磨砂拉链袋 | $$ |
| OPP（双向拉伸PP） | 玻璃般透明 | 挺硬脆响，耐撕性较低 | 零售展示袋、印刷自立袋 | $$ |
| POF（热收缩聚烯烃） | 收缩后极佳 | 薄而强韧的收缩膜 | 托盘裹包、多件组合收缩 | $$ |
叶菜与高呼吸蔬菜（生菜、娃娃菜、西兰花）首要是透气：微孔PE/PO加防雾处理，保脆不结露。柑橘与仁果类（柑橘、橙、梨、苹果）靠货架颜值取胜：高透OPP自立袋或PO拉链袋配8色凹印最能打动零售买手。香蕉用PE串袋与箱内保湿衬袋控制湿度。根茎类（土豆、洋葱、红薯）更重：加厚PE或编织复合袋配强力底封，或网布组合袋保证通风。
孔径和孔数决定氧气交换速率。孔少则结雾腐烂，孔多则失水萎蔫。我们按品类呼吸速率匹配打孔图案——告诉我们品类和保鲜期目标即可。
冷柜里起雾的包装，水果再好看着也像坏了。防雾助剂或涂层让膜面在温差中保持透明——冷藏零售项目必配。
我们全部果蔬袋采用食品级全新料，符合FDA / EU 10-2011标准，使用食品安全油墨。每单可随附合规声明——背后的生产体系见资质证书。
全部袋型实拍图请看果蔬包装袋产品页：拉链袋、自立袋、钉排袋、透气保鲜袋一应俱全。
Send us the crop, pack weight and destination — we'll recommend the spec and quote it.告诉我们品类、装量与目的市场，我们直接推荐规格并报价。