About Rubber
About Rubber Technology

Rubber Classification

Rubber, is the generic terms of  polymers and chemical compounds which has  high elasticity in general.It's also one of the synthetic materials, so which kind of categories can the rubber be divided  ?1. According to the source classification, rubber can be divided into natural rubber, synthetic rubber, recycled rubber.Natural rubber comes from clover rubber tree and silver leaf rubber chrysanthemum.Synthetic rubber comes from petrochemical raw materials.Recycled rubber comes from scrap rubber products.2. According to the application of classification, rubber can be divided into general rubber, special rubber, special rubber.Special rubber also includes anti-X-ray rubber, shock-absorbing rubber, magnetic rubber, thermal rubber, conductive rubber, bio-rubber.3. According to materialized state classification, rubber can be divided into raw rubber, cooked rubber, hard rubber, rubber.4. According to the shape's classification, rubber can be divided into solid rubber, milky rubber, powder rubber, liquid rubber.

The main factors of affecting the vulcanization of rubber

What's the main factors of affecting the vulcanization of rubber? In fact ,there are mianly three factors.1. Vulcanizing ulcanizing temperature. The vulcanization temperature is the basic condition of the vulcanization reaction (crosslinking reaction) for the rubber, which directly affects the vulcanization's speed and the product's quality. The higher the vulcanization temperature are, the faster the curing rate be, the higher the productivity be, and it's easier to produce more of the low sulfur crosslinking bonds. However, the overheating temperature will lead to cross-linking key fracture, a "vulcanization back to the original" phenomenon, so that the physical and mechanical performance of vulcanized rubber are better. Usually the choice of vulcanization temperature need to consider the type of compound, the type of vulcanization system in the formula and the type of product.2.Vulcanizing  pressure, most rubber products in the vulcanization requires to impose a certain pressure. The functions of vulcanization pressure is mainly as follows:A. To prevent the rubber cause bubbles in the vulcanization process, it need to improve the air tightness of product B. The rubber need enough press to make it full-fill the cavityC. Improving the adhesion of rubber and cord fibric,also the flex resistance of the product.D. Improving the physical and mechanical properties of vulcanized rubber.Usually the pressure of the vulcanization of the selection principle: the material quality of the soft pressure should be small, the quality of the pressure should be large; thin-walled products should be small pressure, thick-walled products should be large pressure; product structure is simple pressure should be small, complex structure pressure Large; vulcanization temperature is high, the vulcanization pressure can be smaller.3.  Vulcanizing  time.At a certain temperature and pressure of molding, in order to make the plastic from plastic into elastic, and maximize the cross-linking density, the best time to optimize  physical and mechanical properties is called the vulcanization time of rubber products. Rubber vulcanizing time and rubber vulcanizing temperature is closely related to the vulcanization process.When the physical and mechanical properties of vulcanized rubber of reach or be close to the best point, the degree of vulcanization is called vulcanization or the best vulcanization. The curing time requires to achieve the positive vulcanization is called the positive vulcanizing time, and the vulcanizing temperature corresponds to a certain vulcanizing time. When the curing time is too short, the degree of curing is insufficient;When the curing time is too long, the degree of vulcanization is too high.Ningbo Lary Industry Technology Co., Ltd isa joint venture with Portugal TECNIROLO Engenharia Industrial S.A. Lary is anengineering & manufacturing enterprise which inherits the concept ofproviding customers with best services in Europe for more than twenty years. Lary has committed to product promotion and service of shoe industry technologywith Portugal TECNIROLO. Now, Lary’s current products include: rubber shoe soleinjection mold machine, high precision & speed rubber injection machine, 3Dscanner for shoe last, 3D shoe design software and 3D printer.

What’s Rubber-soled Shoes

What’s Rubber-soled ShoesRubber-soled shoes give a less formal appearance. Many rubber-soled shoes are performance-oriented, for specific sports or casual occasions. Rubber-soled shoes were first designed for mountain climbing. In 1936, Italian mountain climber Vitale Bramani developed the rubber sole, influenced by the Pirelli automotive tire. The rubber sole was designed for traction. Benefits of Rubber-soled ShoesWhile less formal and traditional, rubber soles have comfort considerations. Podiatrist Arnold Ravick of the American Podiatric Medical Association states a typical men's leather sole weighs about five pounds compared to the 2-1/2 pound rubber sole. Running shoe soles weigh weigh only 10 ounces, on average. Rubber soles absorb a greater amount of shock due to their flexibility. Quote from  

What is rubber?

Rubber is a polymer with the property of elasticity which, when modified and strengthened by a curing process called vulcanization, is known as a ‘thermoset elastomer’. Each of the monomers which link to form the polymer is usually made of carbon, hydrogen, oxygen and/or silicon.

How many types of rubber are there?

There are two main types of rubber, natural and synthetic. The former is made from the latex derived ‘naturally’ from the rubber tree, while the latter is synthesized from chemicals sourced from petroleum refining. 

What are differences between Rubber and Plastic?

What are differences between Rubber and Plastic?Rubber vs. PlasticIt is quite easyto differentiate between the two. By simply looking at each material, one canimmediately tell that a particular thing, or object, is made of rubber and notplastic, or vice versa. The only confusion between the two is when the termpolymer is used. Polymer as a term that greatly denotes plastics, butnonetheless, this term also describes the characteristic of rubbers. Althoughrubber is more of the specific elastomer (a viscous or elastic variation ofpolymers), it is still considered to be a polymer.Both plastics andrubbers are classified in many different manners. In fact, for plastics alonethere are more than 10,000 different types. Some are grouped according to type,quality, design or to the material(s) used to make the rubber or plastic. Thisis why both materials have become very diverse in terms of their usage.Plastics are used in almost every aspect, like clothing, food, beverages,construction and many others. Its major classes are the more commonthermoplastics (plastics that will melt when enough heat is applied) and thethermosets (can only melt or take form once, because they remain solid afterthey have been solidified). Rubbers are more commonly used in vehicletires, industrial purposes and specific shoe sole, etc.It is alsoimportant to denote that it was around the year 1976 when plastic become widelyused around the world. Plastics are basically made from natural gas andpetroleum. Both of these raw materials are nonrenewable. Hence, recyclingplastics is the immediate solution to the growing demand for the said material.On the contrary,rubber can be either synthetic or natural. Synthetic means that the rubber ismade from crude oil, which also happens to be another nonrenewable resource.Nevertheless, the other type (natural rubber) can be harnessed from trees (i.e.rubber tree), in which a substance (latex) is then extracted.Although both arepolymers, plastic and rubber differ because:1. Rubber can beconsidered elastomers, and that’s why when compared to plastics, they arenaturally more elastic.2. Syntheticrubber is derived from crude oil, whereas synthetic plastic is made ofpetroleum and natural gas.

About Lary

 Ningbo Lary Industry Technology Co.,Ltd. & Ningbo Lary Machinery Co.,Ltd. are invested and established by TECNIROLO company from Portugal. With it’s great team and advanced technology, the company produce the world’s leading specialized plastic&rubber injection machine for shoe sole.The strategy of TECNIROLO is to run a complete project which means we are not only selling products, but also go deep into the market research to discover and meet the needs of our customers. Supplemented by personalized solutions and technology to provide customers with the best products.For now, Lary’s main business is in production&sale of automatic single/multicolor special plastic&rubber injection machine for shoe sole.Inherited the concept to provide best services which our headquarters (TECNIROLO) has serving customers in Europe for more than twenty years, Lary company committed to spread shoe industry technology and machinery and provide our customers with best&professional services.

About Tecnirolo

In1993 created Tecnirolo Ltd, to start working in areas of 3D design with the 2000 Solution software and machining in 3D with WorkNC, was the first company to have CAD / CAM solutions for the industry , plastic and automotive industry .In 1994 we started working with CAMAX for 5-axis machining, and participated in several projects for the construction of complex parts for military aircraft.In 1996 developed the first system to control production for industrial machines, named Tecmonitor, and still is sold today under the name Factory Monitor.In 1999 took the course in high-speed machining in IGERSOLL (Germany), and began to apply this technology in many factories today have more the 100 clients who began working with this technical collaboration.In 2000 make a new project to a company  Fornoceramica ( one of the largest manufacture of ovens for ceramic ) to improve energy efficiency on ovens  gas burners , with a new tree way flame control (burn control ,atmosphere control , and exhaust control ) this system save at lest 15% energy .In 2004 began developing the first draft for the application in the industry of molds for shoe soles, this project is to automate the entire process manufacturing, reducing costs by 50%, some processes are patented.In 2005 develop the first high precision foundry for the shoe mold industry with a partnership with STOTEK in Denmark , this project reduce de costs up to 50%.In 2006 start working on a project for rubber injection machine specially designed for the industry of shoe soles,in 2008 start the production in China of the rubber injection twin technology. In 2009 installation with success the first 32 machines with new rubber twin injection rubber machines.In 2011 develop a new concept to integration of the design and the mold production to reduce the time bet win the idea and the final product , named  ID-ProductIn 2012 Grendene  (bigger shoe mold factory in Latin America apply the ID- Product concept  In 2013 install with success the new generation of the the twin rubber injection that are 40 % faster than the old one 2013 start the new development of a 3 color multi assemble plastic injection for the plastic shoe industry , to be produce in china in 2014 , prototype will be ready in November