نتایج جستجو برای: rotational molding

تعداد نتایج: 35842  

2017
Vamsi Krishna Chintalacheruvu Rajasekaran Uttukuli Balraj Lavanya Sireesha Putchala Sreelekha Pachalla

AIMS AND OBJECTIVES The objective of the present study is to compare the effectiveness of three different processing techniques and to find out the accuracy of processing techniques through number of occlusal interferences and increase in vertical dimension after denture processing. MATERIALS AND METHODS A cross-sectional study was conducted on a sample of 18 patients indicated for complete d...

Journal: :Expert Syst. Appl. 2012
Long Wu Kit-lun Yick Sun-pui Ng Joanne Yip

Currently, foam molding technologies are widely adopted for most bra styles, which demonstrate the incomparable advantages in the contemporary intimate apparel industry. The determination of proper molding conditions, such as molding temperatures and length of time on the basis of cup sizes and styles, is crucial in achieving the required cup shape with high stability, which is regarded as the ...

2016
Dragan Kusić Janez Grum Dimitrios G. Aggelis Nathalie Godin

This paper presents measurements of acoustic emission (AE) signals during the injection molding of polypropylene with new and damaged mold. The damaged injection mold has cracks induced by laser surface heat treatment. Standard test specimens were injection molded, commonly used for examining the shrinkage behavior of various thermoplastic materials. The measured AE burst signals during injecti...

2014

Molding process in IC manufacturing secures chips against the harms done by hot, moisture or other external forces. While a chip was being molded, defects like cracks, dilapidation, or voids may be embedding on the molding surface. The molding surfaces the study poises to treat and the ones on the market, though, differ in the surface where texture similar to defects is everywhere. Manual inspe...

Journal: :The Journal of prosthetic dentistry 2015
Himanshi Aggarwal Pradeep Kumar

Dear Editor: We read with great interest the article by Namratha and Shetty entitled “A Technique to Evaluate Custom Tray Border Extensions Before Peripheral Molding.” Articles related to evaluation of denture border extensions are numerous, but there is marked paucity of literature regarding evaluation of border extensions of custom trays before border molding. The authors have introduced a co...

A Jahanbin

Introduction: Cleft lip and palate is a congenital anomaly occurring in 3 in 1000 live birth. One the major concern in this patient is about cleft gap and its surgical problems. Several surgical and non-surgical procedures have been done to decrease this gap. They aimed to achieve the more esthetic results as well as feeding success. Nasoalveolar Molding (NAM) is a new method for reshaping nasa...

2012
Hong-Seok Park Xuan-Phuong Dang

Injection molding has been the most popular method for making plastic products due to high efficiency and manufacturability. The injection molding process includes three significant stages: filling and packing stage, cooling stage, and ejection stage. Among these stages, cooling stage is very important one because it mainly affects the productivity and molding quality. Normally, 70%~80% of the ...

Journal: :journal of dental research, dental clinics, dental prospects 0
jafar gharechahi professor of prosthodontics, dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran nafiseh asadzadeh associate professor of prosthodontics, dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran foad shahabian assistant professor of prosthodontics, dental research center, school of dentistry, ahvaz university of medical sciences, ahvaz, iran maryam gharechahi assistant professor of endodontics, dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran

background and aims. the aim of this study was to compare flexural strength of specimens processed by conventional and injection-molding techniques. materials and methods. conventional pressure-packed pmma was used for conventional pressure-packed and injection-molded pmma was used for injection-molding techniques. after processing, 15 specimens were stored in distilled water at room temperatur...

2013
Tie Geng Liqun Yan Yanyun Zhang

Gas-assisted injection molding process is much complicated,the process parameters have multiplied. In this paper, a product with typical character of gas-assisted injection molded part is employed as the object of study. With the mould of gas-assisted injection molding and MPI/3D GAS in Moldflow software,the influence rule of the 6 important process parameters on gas penetration length in gas-a...

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