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

Urea formaldehyde resinUre-aformaldehyde resinsUrea formaldehyde polymer. Also called urea formaldehyde resin. The cross-linking English abbreviation UF. molding, the product is insoluble and infusible thermosetting resin, urea formaldehyde resin cured phenolic resin than the color of light, translucent resistance, weak acid and weak alkali, good insulation properties, excellent wear resistance, low price but, in case of strong acid and strong alkali decomposition, weather resistance is poor. The name Beetle. urea and 37% formaldehyde aqueous solution can be obtained by the polycondensation of linear urea formaldehyde oligomer in catalytic acid or alkali industry, with alkali as catalyst, reaction temperature of about 95, the molar ratio of formaldehyde to urea as 1.2.0, to ensure that the resin curing reaction. The first step to generate and dimethylol urea, then hydroxymethyl amino and soluble resin by further condensation, if by acid catalysis, easy to cause the product to be stored to gel. In neutral condition. The linear UF resin for ammonium chloride Curing agent can be cured at room temperature. The molding powder at 130 to 160 DEG C heat curing accelerators such as zinc sulfate, trimethyl phosphate, two oxalic acid ethyl ester can accelerate the curing process. The urea formaldehyde resin is mainly used in the manufacture of molded plastic manufacturing, daily life products and appliance parts, also can be used as adhesive, paper and fabric sheet the pulp, plywood, decorative board and so on. Because of its light color and easy coloring, products often colorful and magnificent.

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:Packaging machine knife cut out of the mouth is uneven, always inclined, so adjust, now tune not come back, or is unable to cut off, or die!

. This is the importance of after-sales service. Qingdao Xun packaging machine models, can meet the needs of all levels.

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:What does that mean when the composite material is pressed and molded? What are pressing forming? What are the characteristics of press molding equipment? Its development

Molding: mainly used for thermosetting resins. There is a special molding machine. Molding pressure is much greater than the above. The mold structure is also more complex.

Q:Predecessors please point out: what is the future of packaging machinery industry?

In today's world, the upgrading of packaging machinery and equipment and production lines are far ahead of Japan, which has earned a large number of dollars in this field. Southeast Asian Four Dragons also follow Japan, a heart in the performance of manufacturing packaging machinery equipment and production lines; in the European community, Italy packaging machinery equipment and production line upgrading faster than other members faster.Renewal is the means of replacing the local parts and components or key components and key technologies, so as to achieve the replacement of one of the unit, so that the original packaging machinery equipment or production line production capacity, performance, efficiency, and assembly way of updated models. In this way, most parts and machine parts are reused, which can improve the equipment value, save the raw materials and the labor force, and reduce the cost. This development trend shows that the packaging machinery, equipment and production lines are becoming more and more standardized, serialized, integrated, integrated and on-line. Civilian, military and high technology will also be more and more widely used in the field of packaging machinery equipment. Fierce market competition will undoubtedly speed up the upgrading of packaging machinery and equipment in all walks of life and technological transformation.

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

A small object, small particle, powder, crystal, liquid, suitable for packing

Q:Working principle of packing machine

The working principle of the packing machine is simple. The packing material is first installed on the packing machine and installed

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

Q:What machine does the packing carton machine have?

Do the carton machinery: corrugated production line / single machine, printing machine, polishing machine, laminating machine, mounting machine, die-cutting machine, book paste machine for package machinery: automatic sealing machine, automatic strapping machine