WENZHOU NACHENG NEW MATERIAL TECHNOLOGY CO., LTD

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How to identify PE plastic bags and teach you several identification methods

How to identify PE plastic bags and teach you several identification methods

In daily life, many products are packed in PE plastic bags, but there are many types and names of packaging materials. When we need to use PE plastic bags, what method do we use to identify them?

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Causes and Solutions of Defects in Food Bag Production

Causes and Solutions of Defects in Food Bag Production

Reasons for the manufacture of food bags: 1. The tape should be evenly coated with gravure marks; 2. Too much glue; 3. Poor lubricity of substrate surface; 4. There are impurities in the film guide roller of the conveyor belt; 5. Scraper debris or damage, causing scratches; 6. High winding tension and wrinkling of the film 7. High ambient humidity or humidity during processing results in untreated carbon dioxide and whitening between layers. Solutions for the food bag manufacturing process: 1. Adjust the viscosity, concentration and scraping angle of the feed liquid, and replace the gravure cylinder; 2. Re-set the coating amount or replace the austrian roller; 3. Increase the temperature of the compound roll; 4. Clean the guide roller; 5. Clean or polish the scraper; 6. Adjust the winding tension and speed; 7. Increase the drying temperature and reduce the ambient humidity.

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2023

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Precautions for packaging roll production

Precautions for packaging roll production

Coil is a common form of packaging in industry and is widely used. Therefore, the knowledge points that need to be paid attention to when processing and producing roll materials are as follows. 1. Before starting the machine, confirm whether the raw materials, including name, specification, weight, quantity and production plan are accurate; 2. At the beginning of overprinting, the overprinting material should be within the range of the roller registration cursor (can be adjusted according to the situation in the overprinting process); 3. Move the raw material to the center of the material axis. The discharge shaft and the receiving shaft are slightly inclined due to gravity bending, so it needs to be slightly offset inward by 1mm to 2mm during the discharge and receiving process; 4. Set the tracking adjustment guide roller to zero (horizontal), after normal feeding, adjust the tracker to automatically track the edge of the material, and then make fine adjustments according to the actual situation

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2023

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Common problems in the production process of frozen food packaging

Common problems in the production process of frozen food packaging

The basic requirement of frozen food packaging is to maintain the quality characteristics of the product from production, transportation to sales, to prevent bacterial contamination, and to facilitate consumption. At present, there are two main types of frozen food packaging: flexible packaging and hard packaging. The soft type is based on plastic film. Hard packaging, such as slightly thicker paper packaging boxes and composite aluminum foil stamping containers, accounted for a large proportion of the former. In the production process, the packaging of frozen food is prone to the following problems: 1. The impact resistance of the bag is poor, and it is easily damaged by external force during transportation, loading and unloading and shelf placement, and it is easy to break the bag and open the seal. This not only affects the appearance of the packaged product, but also cannot play the role of the packaging itself; 2. The smoothness of the packaging bag itself is not good

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2023

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How to choose a seven layer co extruded film suitable for food packaging bags

How to choose a seven layer co extruded film suitable for food packaging bags

In the food industry, the selection of packaging bags is crucial. Seven layer co extruded film is a common packaging material that has excellent preservation and physical properties, ensuring the safety and quality of food. This article introduces how to choose a seven layer co extruded film suitable for food packaging bags to ensure packaging quality and sustainability.

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2023

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High barrier film demand for fermented feed breathing bags in the electronics industry

High barrier film demand for fermented feed breathing bags in the electronics industry

In the electronics industry, the demand for multi-layer co extruded water-cooled high barrier films is increasing. This high barrier film plays an important role in electronic products, especially in the application of fermentation feed breathing bags. This article introduces the demand for multi-layer co extrusion water-cooled high barrier films in the electronics industry, and explores their importance in fermenting feed breathing bags.

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