Q:Food, equipment, tools, containers, packaging materials, etc. shall comply with food safety standards or requirements

Hygienic standard for polyethylene terephthalate resin for GB 13114 food containers and packaging materialsGB, 13113-1991. Hygienic standard for polyethylene terephthalate molded articles for food containers and packaging materials

Q:How is the production and characteristics of ceramic wall tiles different from the size and performance of molding?

What is the production process of ceramic wall and floor tiles? What are the characteristics of the powders produced by spray drying?The tiles and other ceramic raw materials is similar to inorganic non-metallic materials (mainly silicate) as the main raw material, through accurate mixing processing, according to certain technology and shape the final firing. Significant features of the product shape are the rule of Fu Banzhuang, and most of the semi dry pressing method, and therefore suitable for automatic production line of raw materials 4 ingredients of crude, water, 4 fine granulation molding - burning glaze, glaze firing and assembly of I (paving) pick - packagingThere are different granulation methods in different production processes. The former is to dehydrate the mud and then dip it into the mud or directly with mud cake. The equipment has small investment, easy installation, operation and maintenance, irregular particle shape, uneven thickness and poor flowability. The I drying tower of the spray drying machine directly prepared the slurry into powder, which has high powder making efficiency and good powder flowability, and is the most ideal automatic powder powder making system at present. When the powder made from spray drying tower is pressed to wall and floor tile, the billet handle can be increased by about 30%.

Q:How does the pulp solidify? What additives do you need? Curing agents? Or what do you need as binders?

(1) urea formaldehyde moulding powder;The resin powder of urea formaldehyde resin, commonly known as electric jade powder, is produced by wet process, such as tree ester, curing agent, filler, colorant, lubricant, stabilizer, plasticizer and so on1 Components(1) resin used for urea formaldehyde resin molding powder by condensation reaction degree is relatively shallow, the resin with low viscosity, easy dipping filler, and can ensure the long production cycle and drying after proper fluidity, condensate in the industrial use of urea and formaldehyde at low temperature (a mixture of dimethylol urea, urea and formaldehyde) are usually used. The ratio of 1:1.5 (molar ratio), the PH=8 (and temperature) 30 - 35 of all dissolved, adding urea oxalate was 0.3% - 0.33% and 0.88% - 0.54% of the oxalic acid, then the occurrence of exothermic reaction, temperature rise, temperature in 55 - 60 degrees, and strictly control the PH=5.5 - 6.5, 60 - 75min by urea formaldehyde resin is required. Because the condensation degree is low, in fact just over addition reaction, condensation reaction is mainly in the curing process.(2) the curing agent used in curing agent and pressing powder requires latent, usually oxalic acid, phthalic acid, two formic acid, benzoic acid, chloroacetic acid, etc.(3) packing material is the most commonly used pulp, followed by wood powder or inorganic fillers (glass fiber, asbestos, mica etc.). The pulp is wood as raw material, with sodium bisulfite, non soluble cellulose impurities to the wood, and then byThat is the pure cellulose bleaching. The amount of filler material for the total amount of 25%-32%, the amount is too small, the pressure of plastic powder fluidity big, product strength is low; on the contrary, the amount of excessive pressure, plastic powder fluidity decreases, the product surface is not smooth, water

Q:Which friend is an expert in mechanical equipment or a better understanding of sealing machines? Tell me how to identify the equipment

There are PLC control ah, if it is fully automatic, then ask the quality of sealing ah, it is best to let manufacturers give you a live demonstration, the soft power depends on the size of the factory, ah, after-sales service ah!

Q:Calendering, extrusion, blow molding, pressing, plastic (vacuum forming) and what is the rotational molding

Plastic forming and processing methodPlastic molding is an engineering technology, involves the plastic into all kinds of plastic products in the process. The transformation process tends to happen in one or more of the following conditions, such as polymer rheology and physical and chemical properties of the change.

Q:A & B two sets of packaging machines, at the same time packaging quality of 500 kilograms of goods

(1) calculate the average of two samples;(2) the variance of two samples was calculated;(3) which packaging machine is more stable in packing quality?(1) according to the average, the number divided by the sum of each group;

Q:Three dimensional packaging machine, transparent film packaging machine, transparent film three-dimensional packaging machine industry standards

This standard applies to the use of heat sealing glass paper, BOPP, PVC film and other packaging materials, packaging machine for carton box type items or single package or bag or several stacked and wrapped sealing, widely used in food, medicine, tobacco, cosmetics, stationery, audiovisual products etc.. This standard needs to be purchased.

Q:The difference between wrapping and bagging is explained from the packaging method, and the difference of the working principle of the packaging machine is analyzed

Wrapping of objects of different shapes according to their appearance.

Q:Vacuum packing machine for cooked food: can whole chicken, whole goose and whole duck be packed?

Sometimes, this wine packaging PigHead, with different types of vacuum packaging machine

Q:Ask a mechanical problem, the waste film recycling in the packaging machinery is a new film packaging, after cutting, then use the roller to recycle the waste film. Encounter a

Is it settled?. Not really! It is not recommended to use torque as parameter control here. This is a tricky amount of control. And easy to fluctuate, prone to misoperation