Printing picture whitening
O ink drying too fast. Affect the transfer of ink, so that the substrate is too little ink, resulting in ink layer is too thin; plus solvent volatilization is too fast, resulting in uneven ink layer, bad conjunctiva and white. At this time, slow drying diluent should be added to solve the problem.
O longer printing time. Make the ink viscosity increased, the operator added a single solvent many times. Make the ink in the original mixed solvent fast dry and slow dry ingredients imbalance, dry conjunctiva, ink layer rough and white. At this time, it should be appropriate to add slow drying dilution to solve the problem.
O the operator keeps adding solvent. So that the resin composition in the ink is less and less, can not form a smooth film when drying, so whitening. At this time should be in addition to the solvent as appropriate to add gold oil, do not make the proportion of resin and solvent imbalance.
O the humidity in the printing place is too high. Or the water content of the solvent is too large, so that the ink layer conjunctiva bad and white. At this time, in addition to strictly controlling the moisture content of the solvent, we should also take measures to reduce the humidity in the printing place.
Poor gloss of printing image
O the whiteness of the above mentioned articles will cause poor luster. Sometimes, though it is not whitened, the luster is affected.
O the workshop is not clean, dust adhered to the printing surface or mixed with ink, all affect the gloss.
Fine dot printing or coarse dot also has defects
O ink viscosity is too high, fine screen ink can not be transferred to the substrate. At this time should add slow drying diluent to reduce ink viscosity to solve.
O ink drying is too fast, the version of the fine mesh ink drying, coarse mesh in the ink also has part of the dry knot, so printing and defects, this time should add slow drying diluent to solve.
O insufficient printing pressure or uneven surface will also cause printing failure or defects. Pay attention to adjust the pressure and smooth the surface.
The blank part outside the picture is stained with ink.
O printing ink viscosity is too high, increase the impact on the scraper. Make the scraper scraping ink, at this time should appropriately reduce the viscosity of the ink.
O improper blade angle or insufficient pressure. This can also happen. Adjust the angle and pressure of scraper in case of emergency.
Lines appear at the end of the image (commonly known as trailing tail)
O the ink contains coarse and hard particles or mixed with dust. At this time, the ink should be filtered or replaced in time. And do a good job in dust prevention
O the scraper has a small defect, which leads to tailing, which is more common. The blade should be replaced in time.
The second color ink cannot be printed on the previous layer of ink
O the type or composition of the two inks are different. Resulting in poor affinity and printing, should choose the same type of ink, to avoid this phenomenon.
O for the same type of ink, the surface tension of the previous ink is too low, or the wettability of the latter is poor. It is recommended to use the same manufacturer's ink.
O sometimes the second color plate is too light and should be adjusted.
There are pinholes in the printing screen
O substrate surface is uneven, or contaminated. Do a good job in cleaning.
O the ink is mixed with more water, or the various solvents in the ink are extremely unbalanced due to the excessive addition of a certain solvent in the printing process. Only with new ink, can solve.
Printing and ink layer adhesion
O high temperature and humidity in printing workshop. The printing speed is fast. After blowing hot air on the machine, there is no cold air, or the cold air is not enough. After printing, when rewinding, it is not dry or cold through, so that the back of the printed matter adheres. To avoid post press adhesion, the above conditions should be noted.
O the printed parts have been cut and bagged. The adhesive phenomenon occurred after a period of tight stacking. The reason is that there are too many slow drying solvents and residual solvents in the printing process. For example, butanol. We should try not to add or less.
O poor storage conditions. If the inventory temperature, humidity is too high, the overpressure of the printed parts will also cause adhesion.
O the softening point of synthetic resin used to make ink is too low, which can also cause adhesion, but this rarely happens.
O version too deep, ink layer printing too thick, will also cause adhesion. The depth of the version should be adjusted.
Solvent smell found after compound bag making
O the solvent used in the printing process is impure. High boiling point impurities or too many slow drying solvents were added in the printing process, which resulted in more residual in the dried film. The compound bag will slowly escape and produce odor. The above solvents should be used as little as possible.

O printing speed is too fast, heating drying is not enough, ink is not dry, that is rewinding, and then composite, so that the residual solvent is too much. Should aim at the reason, make the ink dry before compound bag.

Printed matter is not resistant to cooking
O after the composite food bag was steamed and disinfected, the imprint became blurred. This is due to the use of general composite plastic ink printing, in cooking disinfection synthetic resin heat and pressure. For composite food bags that require cooking and disinfection, they should be printed with composite plastic ink resistant to cooking and disinfection.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.
Note to customers:
（1） Due to the large fluctuation of raw materials and the vicious quotation competition of peers on the network, the price of each product can not be clearly displayed in front of customers, so we just mark a symbolic one
Price, if you are very interested in our products, please leave us a message or contact us on Wangwang, we will give you an offer as soon as possible.
（2） As the company's various products have different colors, sizes and models for customers to choose, we will try our best to deliver according to the customer's requirements, and if there is a shortage of goods, we will not be able to follow the wishes of customers
Delivery, therefore, please contact us to determine the price, quantity and model of the relevant products before placing an order.
（3） As a seller, we will treat every transaction carefully and try our best to satisfy every buyer. Network transaction, honesty is king. We have extremely strict requirements and controls on our products,
All products will be inspected by purchasing, QC and warehouse management personnel three times before shipment to ensure that the products delivered to you are qualified products. Please confirm as soon as you receive the products.
（4） The quotation is only the unit price of the bag, excluding the plate making fee.
（5） The delivery time is generally 7-15 days (depending on the quantity).
The product can also print words, patterns, trademarks, etc. according to the requirements, without infringing other people's intellectual property rights, so as to help you improve the corporate image.
Bag can be made into flat bag, self sealing bag, organ bag, stereo bag, etc. the specifications can be customized according to your requirements!
Warm tips: the company has a wide range of products, do not do inventory, product prices are set at will, for reference only, if you need us to quote, please provide specific material, thickness, specifications, size, bag type, quantity, printing several sets of colors,
As well as the special requirements of packaging, we will give you a detailed quotation within 10 minutes. No matter the quantity you ordered is large or small, we will take it seriously, warm, timely and accurate