Shrink bag application common problems(Part Ⅱ)
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Q1: What should I do if the packaging bag's opening doesn't cut properly?
A: This could be due to the cutter being worn out or loose. Check for the specific cause and then adjust or replace the cutter.
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Q2: What causes the edges of the seal to tear?
A: This is mainly because the product is too close to the sealing line, or the sealing line temperature is too high. To solve this, place the product 50-75mm away from the sealing line or lower the sealing temperature.
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Q3: Why are there small holes at the creases of the packaging bag edges?
A: This is primarily a quality issue that occurs during the production process of the packaging bags. If the problem persists, switch to another box or use a different batch of packaging bags, and report the issue to the quality department.
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Q4: How to address the issue of incomplete sealing at the bottom of the packaging bag (factory production side)?
A: This is mainly due to incomplete sealing during production. If the problem persists, switch to another box or use a different batch of packaging bags and report the issue to the quality department.
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Q5: What causes the packaging bags to wear or tear?
A: The main reasons include:
◆Bagging workers piercing or tearing the bag while bagging.
◆Poor product flow in and out of the machine.
◆Products not properly aligned on the platen.
◆Hard products (such as Italian sausage, Parmesan cheese, etc.).
◆Rough handling operations.
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Q6: Why do tears occur on the sides of the packaging bag seals?
A: The main reason is that a small part of the packaging bag gets pinched by the vacuum machine's lid during the vacuum process, causing tears. The solution is to place the packaging bag as centrally as possible in the vacuum machine, with the bag at least 50mm away from the inner wall of the vacuum machine.
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Q7: How to deal with pinholes in packaging bags?
A: Pinholes in the packaging bags are caused by mechanical impact puncturing the bags. If the issue persists, start checking from the bagging area to see if the bags are coming into contact with burrs, sharp guardrails, conical belts, conveyors, shrink machines, pressure plates, box lids, or chain mail. If the bags already have pinholes before use, report it to the factory.
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Q8: Can the sealing area still be sealed if a product gets caught in it?
A: If meat products are caught in the sealing area, the seal will fail. The solution is to correctly place the meat products and packaging bags before sealing, ensuring no meat products are in the sealing area.
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Q9: How to handle the issue of the top side of the bag being pulled back, causing the vacuum to fail?
A: The top side of the packaging bag being pulled past the sealing line causes the seal to fail and the vacuum to be lost. This might be because the packaging bag used is too short. It is necessary to place the bag correctly on the sealing line, and if the bag is too short, the correct bag should be used.
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Q10: What are the causes of shrink bags being punctured by bone spurs?
A: The main causes are as follows:
◆The bone guard did not fully cover the bone.
◆The wrong type of packaging bag was chosen for the specific product.
◆The packaged product came into contact with obstacles, causing the bone to puncture the shrink bag.
◆The bones in the product were exceptionally sharp or already broken.
◆Bone-in products were stacked after bagging and before unpacking.
◆Unprotected bones came into direct contact with obstacles.
◆When placing bone-in products into cartons (handle with care to ensure the bone-in parts are placed at the top of the carton).
◆The bones were not treated, and the surface was not smoothed.
