Mold control

Set up the complete molding cycle to repeatedly meet performance requirements at the lowest cost by interrelating material/machine/ mold controls. 

Polymerization. Isothermal polymerizations were conducted in 1/8" molds controlled at the stated isothermal temperature. Below lOO C circulating water was the temperature control medium whereas circulating air was used above 100 C. Reactants were... 

In Chapter 4 we learned that clay is made of minerals, including potassium, aluminum, and silicon oxides. Barium and other metal oxides, vermiculite, and mold controllers are often added to clay to enhance clay properties. If dry clay is mixed with water, large amounts of silica can be released into the air. 

Fungicide Fungi, mold Controls plant diseases... 

Fruit with faded or gray-white, sunken patches or pits. Causes Sunscald cold injury. Green or ripe fruit can be sunscalded. Damage shows up as a large, sunken patch on the exposed side. Patches turn dry and may develop black mold. Control leaf diseases to prevent defoliation, so fruit will be shaded and protected from direct sun. Stake plants. 

Use Food preservative, fungicide, mold control in sausage casings. 

Compression molded control films of VDC copolymer, 1-2 mil in thickness, were prepared by reheating extrusion cast films between the platens of a molding press. 

Figure 14. Effect of processing time on the rate of photooxidation of LDFE. (a) compression-molded control (b) processed for 5 min (c) processed for 30 min (d) processed for 30 min and heated in argon for...

Either non-covalent or covalent templates need to be absent in the original substrate as well as in the product or, at least, should be removable after having accomplished their task. Tethers should be effective in the transition states of reactions and, by acting as a mold, control the rate and the regio- and stereochemistry. Thus the monograph focuses on reactivity rather than on static structural chemistry. It is intended to promote the use of intermolecular non-covalent interactions, besides steric discrimination, to control reactivity and selectivity. Its content was selected to provide useful template- or tether-based methodology to both expert and novice practitioners in both the molecular and supramolecular sciences. 

Bullerman, L. B. (1977). Mold control in the cheese plant. Ital. Cheese J. 6,1-8. 

An injection molding machine consists of the following major components plasticating unit/injection unit, mold, controls, and. ... 

Sneller, J. A., Blow Molding Controls Begin to Make CIMMore Likely Prospect, MP, pp. 57-62, Aug. 1988. 

Smart Box 2000, Blow molding control, Hunkar Laboratories, Inc. 

J. B. Alms, S. G. Advani and J. L. Glancey, Liquid Composite Molding control methodologies using Vacuum Induced Preform Relaxation , Composites Part A- Applied Science and Manufacturing, 42(f), 57-65. DOI 10.1016/j.compositesa.2010.10.002. January 2011. 

The pressure-temperature-time relation in the mold controls both the size and dispersion of the gases generated from the blowing agent. In the mass-transfer sense, both diffusion and solution play a role division in the movement of the gases in the resin, and solution in fixing the amount of gas retained in the object. A typical density profile for a structural foam is shown in Fig. 8-26. 

Distances can be controlled during injection molding. Control of distances is critical to producing high quality products at alow cost because longer distances result in longer cycle times. The most common distances are used for mold close, dosage or shot size, cushion or pad, screw return, mold open, and ejection. 

In injection molding control, along with cavity pressure, nozzle pressure, melt temperature, melt viscosity, and mold separation are widely employed. Process variables are dependent upon the collective effect of the machine setting. Process variables are melt temperature, melt pressure, melt front advancement, shear stress, and the rate of heat dissipation and cooling. 

---